From 4e8d5d5ed90aaa0f500253b6bafb9d3c258d640e Mon Sep 17 00:00:00 2001
From: Andreas Billmann <andreas@billmann.de>
Date: Fri, 5 Aug 2016 23:17:39 +0200
Subject: [PATCH] Updated Validation Configuration (markdown)

---
 Validation-Configuration.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Validation-Configuration.md b/Validation-Configuration.md
index 658aa1a..22d9483 100644
--- a/Validation-Configuration.md
+++ b/Validation-Configuration.md
@@ -95,6 +95,12 @@ _(Empty cells are not checked, see not empty validation)_
 The value can only be numerics and alphabetic characters.
 _(Empty cells are not checked, see not empty validation)_
 
+### unique
+
+	"unique" : true
+
+The value can only exist once in this column.
+
 ### regexp
 
 	"regexp" : "[0-9a-zA-Z]*"